Tuesday, 31 July 2007 - Monthly Climate Summary for Adelaide Metro - Product code IDCKGC13R0

Adelaide Metro in July 2007
Rain Below Average, Temperature Slightly Up.

Summary

Rainfall in Adelaide during July was below average, though still remaining very slightly above average for the year to date. July remained below average for temperatures for much of the month, with warm temperatures in the last week bringing the month to slightly above average.

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Rainfall

Adelaide's rainfall for July 2007 to date is 65.6 mm, recorded on 19 days. This is 9.3 mm below the average of 74.9 mm on 17 days. Last year 36.0 mm was recorded in July on 14 days. The driest ever July was in 1944 when only 8.4 mm was recorded.

The total rainfall for the first seven months of 2007 is 316.0 mm. Last year 207.8 mm was recorded over the same period. The average rainfall for the first seven months is 315.4 mm.

The total rainfall for the first two months of winter 2007 is 124.8 mm. This is 32.1 mm below the average of 156.9 mm for the same period. June/July for 2006 recorded 48.4 mm with the previous driest in 1913 when only 33.6 mm was recorded.

Temperature

The mean maximum temperature for July 2007 was 15.6°C*, which is 0.3°C* above the average July mean maximum temperature of 15.3°C. The mean July maximum last year was 15.3°C.

Maximum temperatures ranged from 11.3°C on the 19th July to 21.4°C on the 25th July with the record July daily maximum temperature being 23.1°C in July 2002.

The mean minimum temperature for July 2007 was 7.8°C, which is 0.4°C above the normal July mean minimum of 7.4°C. Last July, the mean minimum was 7.5°C.

Minimum temperatures ranged from 2.7°C on the 18th of July to 13.7°C on the 25th July.

*calculated to 3pm 31 July 2007

Further information

South Australian Regional Office
South Australian Climate Services Centre
Bureau of Meteorology
Phone (08) 8366 2600
Email climate.sa@bom.gov.au

Extremes

Hottest day
Highest temperature		 21.6°C at Edinburgh RAAF on the 25th
21.6°C at Parafield Airport on the 25th
Warmest days on average
Highest mean daily maximum temperature		 15.6°C at Adelaide (Kent Town)
Coolest days on average
Lowest mean daily maximum temperature		 14.6°C at Noarlunga
Coldest day
Lowest daily maximum temperature		 11.1°C at Edinburgh RAAF on the 19th
Coldest night
Lowest temperature		 0.3°C at Parafield Airport on the 13th
Coolest nights on average
Lowest mean daily minimum temperature		 5.7°C at Parafield Airport
Warmest nights on average
Highest mean daily minimum temperature		 8.7°C at Noarlunga
Warmest night
Highest daily minimum temperature		 15.0°C at Noarlunga on the 25th
Wettest overall
Highest total rainfall		 65.6 mm at Adelaide (Kent Town)
Highest wind gust
 94 km/h at Noarlunga on the 4th

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Summaries

Summary statistics for July 2007
Maximum temperatures
for July
(°C)		 Minimum temperatures
for July
(°C)		 Rainfall
for July
(millimetres)
Mean for
July
2007		 Diff
from
normal		 Highest for
July
2007		 Mean for
July
2007		 Diff
from
normal		 Lowest for
July
2007		 Total for
July
2007		 Normal
for
July		 Rank of
July
2007		 Fraction of
July
normal
Adelaide 15.6 +0.3 21.4 25th 7.8 +0.4 2.7 18th 65.6 74.9 normal 88%
Adelaide Airport 15.2 +0.3 20.8 24th 7.0 +0.1 1.6 20th 46.0 59.8 normal 77%
Edinburgh RAAF 15.2 −0.1 21.6 25th 5.9 −0.1 0.8 13th 46.2 52.6 normal 88%
Noarlunga 14.6 19.7 24th 8.7 4.5 18th 54.0
Parafield Airport 15.4 +0.4 21.6 25th 5.7 −0.6 0.3 13th 39.2 58.9 low 67%

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Notes

This statement has been prepared based on information available at 3 pm on Tuesday 31 July 2007. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

Normals are long-term means based on observations from all available years of record, which vary widely from site to site. They are not shown for sites with less than 20 years of record, as they cannot then be calculated reliably.
The median is sometimes more representative than the mean of "normal" rain.

The Rank indicates how rainfall this time compares with the climate record for the site, based on the decile ranking (very low rainfall is in decile 1, low in decile 2 or 3, normal in decile 4 to 7, high in decile 8 or 9 and very high is in decile 10).
The Fraction of normal shows how much rain has fallen this time as a percentage of the long-term mean.

Further information

South Australian Regional Office
South Australian Climate Services Centre
Bureau of Meteorology
Phone (08) 8366 2600
Email climate.sa@bom.gov.au